/*
 * Copyright (C) 2008 The Android Open Source Project
 * Copyright (C) 2017 Ole André Vadla Ravnås <oleavr@nowsecure.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#define frida_asm_align 0
#define frida_asm_custom_entry(f) .fnstart
#define frida_asm_custom_end(f) .fnend
#define frida_asm_function_type #function

#include "syscall-linux.h"

ENTRY_PRIVATE(syscall)
  mov     ip, sp
  stmfd   sp!, {r4, r5, r6, r7}
  .cfi_def_cfa_offset 16
  .cfi_rel_offset r4, 0
  .cfi_rel_offset r5, 4
  .cfi_rel_offset r6, 8
  .cfi_rel_offset r7, 12
  mov     r7, r0
  mov     r0, r1
  mov     r1, r2
  mov     r2, r3
  ldmfd   ip, {r3, r4, r5, r6}
  swi     #0
  ldmfd   sp!, {r4, r5, r6, r7}
  .cfi_def_cfa_offset 0
  cmn     r0, #(FRIDA_MAX_ERRNO + 1)
  bxls    lr
  neg     r0, r0
  b       _frida_set_errno
END(syscall)
